TIFFError.3tiff 2.5 KB

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  1. .\"
  2. .\" Copyright (c) 1988-1997 Sam Leffler
  3. .\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
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  6. .\" its documentation for any purpose is hereby granted without fee, provided
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  9. .\" Sam Leffler and Silicon Graphics may not be used in any advertising or
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  13. .\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
  14. .\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  15. .\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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  24. .if n .po 0
  25. .TH TIFFError 3TIFF "October 15, 1995" "libtiff"
  26. .SH NAME
  27. TIFFError, TIFFSetErrorHandler \- library error handling interface
  28. .SH SYNOPSIS
  29. .B "#include <tiffio.h>"
  30. .sp
  31. .BI "void TIFFError(const char *" module ", const char *" fmt ", " ... ")"
  32. .sp
  33. .B "#include <stdarg.h>"
  34. .sp
  35. .BI "typedef void (*TIFFErrorHandler)(const char *" module ", const char *" fmt ", va_list " ap ");"
  36. .br
  37. .B "TIFFErrorHandler TIFFSetErrorHandler(TIFFErrorHandler handler);"
  38. .SH DESCRIPTION
  39. .I TIFFError
  40. invokes the library-wide error handling function to (normally) write an error
  41. message to the
  42. .BR stderr .
  43. The
  44. .I fmt
  45. parameter is a
  46. .IR printf (3S)
  47. format string, and any number arguments can be supplied. The
  48. .I module
  49. parameter, if non-zero, is printed before the message; it typically is used to
  50. identify the software module in which an error is detected.
  51. .PP
  52. Applications that desire to capture control in the event of an error should
  53. use
  54. .IR TIFFSetErrorHandler
  55. to override the default error handler.
  56. A
  57. .SM NULL
  58. (0) error handling function may be installed to suppress error messages.
  59. .SH "RETURN VALUES"
  60. .IR TIFFSetErrorHandler
  61. returns a reference to the previous error handling function.
  62. .SH "SEE ALSO"
  63. .BR TIFFWarning (3TIFF),
  64. .BR libtiff (3TIFF),
  65. .BR printf (3)
  66. .PP
  67. Libtiff library home page:
  68. .BR http://www.simplesystems.org/libtiff/